Liquid crystal display

Abstract

A liquid crystal display includes: a first subpixel electrode disposed on a first substrate; an insulating layer disposed on the first subpixel electrode; a second subpixel electrode disposed on the insulating layer; and a common electrode disposed on a second substrate, the second substrate facing the first substrate. The first subpixel electrode is overlapped with a portion of the second subpixel electrode, and the first subpixel electrode and the second subpixel electrode are configured to receive substantially the same electric potential.

What is claimed is: 
     
       1. A liquid crystal display, comprising:
 a drain electrode disposed on a first substrate; 
 a first subpixel electrode disposed on the first substrate, the first subpixel electrode not overlapping with the drain electrode; 
 an insulating layer disposed on the first subpixel electrode; 
 a second subpixel electrode disposed on the insulating layer, the second subpixel electrode being connected to the drain electrode, the second subpixel electrode comprising:
 a plurality of branch electrodes; and 
 a connection region where the second subpixel electrode is connected with the first subpixel electrode; and 
 
 a common electrode disposed on a second substrate, the second substrate facing the first substrate, 
 wherein the connection region of the second subpixel electrode is spaced apart from the drain electrode and disposed at a central region of the second subpixel electrode, the central region being closer to a center of the second subpixel electrode than edges of the second subpixel electrode, and 
 wherein, in a plan view, the first subpixel electrode overlaps with less than all of the second subpixel electrode. 
 
     
     
       2. The liquid crystal display of  claim 1 , wherein:
 the first subpixel electrode has a planar plate shape. 
 
     
     
       3. The liquid crystal display of  claim 2 , wherein, in the plan view:
 the first subpixel electrode overlaps with a portion of the plurality of branch electrodes, and overlaps with a portion of openings between the plurality of branch electrodes; and 
 the plurality of branch electrodes extend beyond the first subpixel electrode. 
 
     
     
       4. The liquid crystal display of  claim 1 , wherein:
 the first subpixel electrode has a polygonal shape. 
 
     
     
       5. The liquid crystal display of  claim 4 , wherein:
 the first subpixel electrode and the second subpixel electrode are connected to each other through a contact hole in the insulating layer. 
 
     
     
       6. The liquid crystal display of  claim 5 , further comprising:
 a gate line and a data line disposed on the first substrate; and 
 a thin film transistor connected to the gate line and the data line, 
 wherein the second subpixel electrode is connected to the thin film transistor via the drain electrode. 
 
     
     
       7. The liquid crystal display of  claim 1 , wherein:
 the first subpixel electrode and the second subpixel electrode are connected to each other through a contact hole in the insulating layer. 
 
     
     
       8. The liquid crystal display of  claim 7 , further comprising:
 a gate line and a data line disposed on the first substrate; and 
 a thin film transistor connected to the gate line and the data line, 
 wherein the second subpixel electrode is connected to the thin film transistor via the drain electrode. 
 
     
     
       9. The liquid crystal display of  claim 1 , further comprising:
 a gate line and a data line disposed on the first substrate; and 
 a thin film transistor connected to the gate line and the data line, 
 wherein the second subpixel electrode is connected to the thin film transistor via the drain electrode. 
 
     
     
       10. A liquid crystal display, comprising:
 a common electrode; 
 a drain electrode disposed on a first substrate; 
 a first subpixel electrode disposed within a first region of a pixel of the liquid crystal display; 
 a second subpixel electrode disposed in the first region and a second region of the pixel of the liquid crystal display, the second subpixel electrode being directly connected to the drain electrode, the second subpixel electrode comprising an opening in the first region; 
 an insulating layer disposed between the first subpixel electrode and the second subpixel electrode; and 
 a liquid crystal layer disposed between the common electrode and the first subpixel electrode and between the common electrode and the second subpixel electrode, 
 wherein the common electrode and the first subpixel electrode form an electric field in the first region, 
 wherein the common electrode and the second subpixel electrode form an electric field in the first region and the second region, 
 wherein the second subpixel electrode is configured to directly receive a data voltage from a thin film transistor, 
 wherein the first subpixel electrode comprises a connection region where the first subpixel electrode is electrically connected with the second subpixel electrode, the first subpixel electrode being configured to indirectly receive the data voltage from the thin film transistor via the second subpixel electrode, and 
 wherein the connection region is disposed at a central region of the first subpixel electrode, the central region being closer to a center of the first subpixel electrode than edges of the first subpixel electrode. 
 
     
     
       11. The liquid crystal display of  claim 10 , wherein:
 the second subpixel electrode comprises branch electrodes; 
 first portions of the branch electrodes are located in the first region; 
 second portions of the branch electrodes are located in the second region. 
 
     
     
       12. The liquid crystal display of  claim 11 , wherein:
 the branch electrodes are spaced apart from each other; and 
 the common electrode and the first subpixel electrode forms the electric field in the first region through the opening. 
 
     
     
       13. The liquid crystal display of  claim 11 , wherein:
 the branch electrodes comprise first branch electrodes and second branch electrodes, the second branch electrodes extending in a direction different from an extending direction of the first branch electrodes. 
 
     
     
       14. The liquid crystal display of  claim 10 , wherein:
 the first region is located at the center of the pixel; and 
 the first subpixel electrode is not disposed in the second region.